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It looks like I have my first DragonMint card failure... card stats look like this...
# Hash Rate Status Accepted Rejected HW Temperature
1 528.86 GH/s Alive 23/0 13274 87 ℃
2 5.30 TH/s Alive 273/2 7839 76 ℃
3 5.33 TH/s Alive 281/0 6084 77 ℃
How is the repair process at Halong? Can anyone comment on what i should do and your thoughts on the repair process?
Thanks,
Steve
BTW - i have loaded the latest firmware and rebooted. Stats still look like the above.
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Greetings folks, pretty new here. I just got my avalon 741 over the weekend and am running 2 corsair 650w psu's with no issues...very impressed with ease of setup. I do have a few questions
- Does anyone run their miner without an ethernet hardlined to the router and rely solely on the pi3's wifi? Would give me some flexibility with where my miner sits
- Curious what kind of hashrates you guys are seeing underclocked at -2? I wouldn't mind running mine a little slower for a quieter room.
- Everyone here mostly mining Bitcoin core? I am currently mining on slushpool but have been looking at BTC.com as well for BCH.
Thanks!
My advice... Don't leave Slush. They do the morale thing and mine the real bitcoin. Also, yes, I run Avalon 741's using a PI with CgMiner on it. My PI is plugged into a powerline adapter. For 5 miners, I was getting between 36TH/S and 36.5TH/S and I was running at "-2". Personally, I believe you are not gaining much by NOT running at "-2". Your just using more power for very little gain, plus the fans are louder and heat is higher. I would recommend always running on -2. |
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S9s are available.
Pay with bcc/bch only That sucks, man they are a manipulative company. Stocking their coffers with an alt currency in hopes it will rise like BTC. Apparently it's not well known that they are the main reason BCH exists. That's why they are backing it, it's their doing that it exists! M EDIT: I thought that's what I'd read at least, however I'm having a hard time finding documentation backing that. Therefore I may be mistaken. Jihan Wu and Roger Ver are the reason BCash exists. It was their attempt to wrest codebase control away from Bitcoin Core, who in my opinion, has been doing a good job keeping Bitcoin safe since 2009. Yes, Core needs to work a little faster to find better scaling solutions. But, they follow a strict software development methodology and they work hard to get consensus from users and miners before making a major change. I think these hard forks suck, and they take credibility away from Bitcoin. This latest fork, Segwit2x, is Barry Silbert and Jeff Garzik's half baked attempt at a scaling solution. It hasn't been through the rigorous testing process which Core uses. Also, ironically, Jeff G just declared he is launching a competing coin (an ICO). That is laughable. Right when he should have been completely dedicated to Segwit2x, he announces a competing coin. I hope this pool sticks with Bitcoin Core support as much as possible. Also, run a Bitcoin Core node if you can in order to support the network. This is a great tutorial if you are interested: https://99bitcoins.com/step-by-step-guide-firing-up-bitcoin-node/ Or, you can Google "Bitseed" and buy one of their dedicated nodes which you just plug into your router. |
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I am trying to change wallets from GreenAddress to Trezor. I have updated the miner with the new BTC address and am now ready to transfer my BTC funds from GreenAddress to Trezor. When I started the process I was shocked to see a .01675051 Transaction Fee to transfer only .10899048 BTC. I found this thread on the subject https://bitcointalk.org/index.php?topic=1476536.0;all which basically says auto calculated fees are a joke on GreenAddress and to chose my own fees. I found that fees are based on transaction size but I am unsure how to find the size of the transaction. So now is where I need smarter peoples help. I am in no hurry, however I would like the transfer to be completed before the upcoming fork, so I am cool with a slowerish confirmation time. If I choose 0 for the fee on GreenAddress it gives a warning stating the fee rate is too low and the minimum rate was used of .00001 BTC which makes my total fee .000084360 BTC Is this a good fee size? Will a fee of this size get my transaction processed? If so what would be an expected turn around time for confirmations? As my status says I am a newbie so please go easy on me with replies. Alan Silbert on Twitter has done experimental transfers and transactions as low as 4 satoshis (0.00000004 BTC). It will get processed, but it might take longer.... you've got plenty of time between now and the fork though. |
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I just switched over yesterday. Yes, the 8 day ramp is kinda painful and I don't fully understand why it is necessary? I'm willing to stick it out because small pool mining seems like much more fun, but maybe someone could explain the rationale for the 8 day ramp a little better?
The "ramp" time varies based on difficulty and pool hash rate. Right now it's pretty large. The advantages, once you get ramped up, is that you are sort of "invested", for lack of a better word. What I mean is, let's say you have a power outage, and during that time when your miners are offline, the pool finds a block. During that time you are "ramping down", however you will still get a credit for your 5N portion of the block. That also means if/when you leave the pool, you experience the 5N ramp down period, so you get (proportional) credits for any blocks during that time. M Thanks Mdude77. That helps. |
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the daily average for the last 3 or so months which is ~0.000251 BTC/TH/day.
.00028838 BTC /day /TH
Are these #s a pretty accurate expectation? Obviously the last 3 months were pretty brutal luck-wise from the stats, but those are still strong payouts per TH/day. If luck comes back to "normal" then these payouts could be even better. The 8 day ramp up causes me some concern, but I think I'm going to switch my miners over and go with Kano for the long-haul (after the fork, don't want to lose that extra free b2x waiting on the ramp-up would cost me), that payout per TH/day is crushing what I'm currently making and that's with "bad" luck! I just switched over yesterday. Yes, the 8 day ramp is kinda painful and I don't fully understand why it is necessary? I'm willing to stick it out because small pool mining seems like much more fun, but maybe someone could explain the rationale for the 8 day ramp a little better? |
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Hi all. I just wanted to say hello... I’m moving from Slush to Kano because I like the smaller pool atmosphere (and this board) and want to support decentralization as much as possible. I hope my 37.5 TH/S (5 Avalon 741s) will help. I plan to add a few more over the coming months, and eventually double to 9 or 10 machines. I’ve recently converted a small space wine room to a mine with the help of a lot of folks on this board. ✌️
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@kano - thinking of joining your pool. I know your luck has been down lately and its most likely normal. However, I wanted to tell you something you probably already know... but just in case... i compared the block size of your last 150 blocks to Slush's last 150 blocks. That's probably not enough of a sample size, but wanted to let you know your avg block size is 5% below Slushs. Your code is not filtering any blocks out by size, is it? I apologize if this has been brought up before. I'm not trying to stir up any issues... I just know that this same issue existed with Slush awhile back, and they were filtering out blocks by accident. Slush has since corrected the issue.
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You want the path: (fresh air) -> (machines) -> (outside) to be as wide and have as few turns as possible, while still being fairly direct.
Is dumping the heat into a "receptacle" and then bringing it out going to be a wide open path, or will it just let the heat pool up?
Why not let the entire room be a "duct"?
Is the flex duct running between studs? If so can you just pan the studs so the channel forms a natural "duct"?
What's above this room? Attic? Perhaps you could open the entire ceiling, extend wall up and over, and put gable fans on side of house.
What do you mean by "pan the studs"? Yes, flex duct is running from the top of the 1200 cfm fan between the studs and outside the house. Its about 8 feet w/ 1 turn at the top. I cannot open the ceiling as the kitchen is above that room. Also, the square hole left over from the wine cooling unit dumps to a closet in a guest bedroom. So, the fresh air I will be bringing in is not from the outside. Its room temperature air from the guest room. Not ideal. This small space has been a challenge. |
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Ok, it’s been awhile since I posted, but I finally got the 1200 CFM fan installed into my small space 5’x5’x8’ converted wine room. As you can see from my pictures, I’ve hung the fan from 2x4 studs. The fan utilizes 8’ of 10 inch duct to expel the hot air out the side of my house. I’ve also removed the old wine cooling unit and you can see the resulting open square left in the wall. I will bring fresh air in through that opening. I hooking up a generic 2.5 foot house fan to that black duct you see coming from the open square. However, that’s not working at all. When I shut the door, my miners heat up to 42 C real quick. Do you guys think I need to buy another 1200 (or higher) CFM fan and push fresh air through that square? Right now, I have 5 Avalon 741s running. I’m not sure how to expel all this heat effectively? https://imgur.com/gallery/3jUrsThanks for your help, Steve Avalon 741 has a 250cfm fan. Having 5 of them gives you a total of 1250cfm. Plus the heat load from the power supply.. i suppose you have 1600W PSU running them. Your 1200CFM fan is not enough to expel all the hot air coming from your miners and power supply. Also, those flexible aluminum duct has high friction loss. Your 10" flex duct gives around 3050FPM air velocity at 1200cfm of air. Either change your fan and make it around 1500-2000 cfm, or add another one. Then change your flex duct. It is quite small for your air volume. If the other side of that square opening where your flex duct is already outside the house, just make a screen with filter for better airflow. Window opening should be atleast 1.5 times the area of your exhaust fan duct area, BUT it should be below your miner or else there will be "short circuit" in your air flow. Fresh air will just exhaust out right away by your fan. You have two choices the way I see it. If you don't relocate your window opening below, put a duct to your exhaust fan and extend it beside the fans of your miners so it can easily suck up the hot air (change your duct size). Or, leave your exhaust fan up there and relocate your window below, put louver/grille/screen and filter. Whichever makes it easier for you. Thanks for the help. My original design was to hook the 5 miners up with ducts to a "hot air receptacle" and then suck the hot air out of the receptacle with duct work to the inline fan. I may try to go that route, and also add a better/more powerful fan. I think my 1200 cfm could probably act as the fan that pushes fresh air in, but I'll need a bigger fan to draw out the hot air. Anyway, thanks. |
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Ok, it’s been awhile since I posted, but I finally got the 1200 CFM fan installed into my small space 5’x5’x8’ converted wine room. As you can see from my pictures, I’ve hung the fan from 2x4 studs. The fan utilizes 8’ of 10 inch duct to expel the hot air out the side of my house. I’ve also removed the old wine cooling unit and you can see the resulting open square left in the wall. I will bring fresh air in through that opening. I hooking up a generic 2.5 foot house fan to that black duct you see coming from the open square. However, that’s not working at all. When I shut the door, my miners heat up to 42 C real quick. Do you guys think I need to buy another 1200 (or higher) CFM fan and push fresh air through that square? Right now, I have 5 Avalon 741s running. I’m not sure how to expel all this heat effectively? https://imgur.com/gallery/3jUrsThanks for your help, Steve |
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I just hooked up a s9 Antminer and cannot get worker state to turn on my account eventhough the miner has been mining for a couple hours. I do have the URL correct and the worker correct in the miner. Please assist it may sound like a crazy question but I cannot figure it out. Thanks in advance.
Did you hit "Save and Apply" in Cgminer? Also, just because the miner is making noise doesn't mean that it is mining. You are labeled as a newbie, so I'm not sure if you understand this concept. I use Avalon miners and the light on the back of the miner has to be green, not yellow, to denote active mining. I'm not sure how it works on S9s, but it is probably similar. |
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Is anyone else having this issue about once per day with Slushpool? I'm using a Power Line adapter for my internet connection, so I'm trying to rule out issues with slushpool? Its probably my adapter, right?  |
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I am not understanding why you have the ducts going through the doorway. Are you going to step over them?
If for example, you are exhausting 120 degree air through those ducts they are going to be HOT, ie burn yourself HOT.
an easier example would be to put the fan by the door, and then blow the air through the cards into an evase as it escapes the room. So shift the miners to be toward the back wall.
Remember that hot air rises, take advantage of that.
You are saying that I don't even need the ducts and trash can at all? Just pull the hot air out through ceiling and then pipe fresh air down low? I didn't draw the pic very well. The drawing represents me standing in front of the room looking in (not a top down view). The door is right in front of me as I look into the room. I have to open it to look in. The fresh air 1.5 x 1 hole is on the back wall. |
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4) I've purchased a 1200 cfm fan which will sit on top of the upside down trashcan. I will cut a hole in top of the trashcan and fan will pull air through hole and vent through flex duct and out the side of the house.
Why a trash can? Virtually all non-metal trash cans are made of polypropylene. This is the most annoying substance on the face of the earth because absolutely no glue will stick to it except for an insanely-overpriced two-part epoxy from 3M that costs $120 per tube. JB Weld claims one of their products can glue polypropylene but I know from firsthand experience this is a lie. Anyways. Don't try to make DIY stuff out of anything involving polypropylene, you'll be kicking yourself as soon as you realize you need to glue something somewhere. I appreciate the suggestions to not use a trashcan, but unfortunately, I already purchased 5 saddled air-tite take-offs from home depot (which fit a cylinder shape). Also, the bottom of the trashcan is very rigid, and I wanted something really strong to hold the weight of the fan. Plenum probably could have served that purpose too. Anyway, I did find this Loctite glue for $3 at Home Depot. It does look like you have to use the activator first on polypropylene. Hopefully that works. If not, I will take back the trashcan and the saddled take-offs and go w/ plenum. http://www.homedepot.com/s/Loctite%2520Plastics%2520Bonding%2520System?NCNI-5 |
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Thanks for the good thoughts. Here are my responses to questions raised:
1) There is a 1.5 x 1 foot opening in the back of the closet where a 1600 watt wine cooling unit was installed. I'm going to remove that because it sucks a ridiculous amount of power. I was tempted to use it it for cooling, but that's just too much power. So, all fresh air will come in through that opening.
2) Phillip- from our earlier conversations, I was under the impression that each Avalon 741 miner puts out 200 cfm. 200 x 5 miners = 1000 cfm. My fan will remove 1200 cfm and then I will have a small fan pushing in fresh air through the 1.5 x 1 opening. Why wouldn't this work? The larger 10" duct coming from the miners makes sense.
3) The door will not be kept open to cut down on noise. Also, the walls of the wine room have some special insulation which also cuts down on noise. I haven't received the 1200 cfm fan yet, so I am a little worried about how loud that will be.
Going to bed now. I will post pics soon. Thanks again.
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I'm about ready to start construction to convert my unused wine room into a bitcoin mine. I've posted a lot before, but here's a recap: 1) Converting a 5' x 5' unused wine room into my home mine. Ceilings are 8'. 2) The room is right next to an outdoor wall, so I will be venting heat up through one hole in ceiling and out the side of the house using a combination of plenum between joists and 10" insulated flex dropping from ceiling into room. 3) My 5 Avalon 741s will sit on a wire shelf and push heat through hoses onto an upside down rubber trashcan. I will cut holes in trashcan and add take-offs. 6" ducts will go from each miner to 1 take-off on the trashcan. 4) I've purchased a 1200 cfm fan which will sit on top of the upside down trashcan. I will cut a hole in top of the trashcan and fan will pull air through hole and vent through flex duct and out the side of the house. PLEASE HELP ME FIND ISSUES WITH THIS PLAN or just comment on what you think of it. I am attaching a pic so you can visualize. Thanks again for all your help. Yes, I draw like a 3rd grader, and yes my wife hates me now. Edit: How the hell do you add an inline photo from Imgur?? |
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Holy crap! Isn't that overkill? Maybe you are the planning for a major expansion? Also, how noisy are those fans? I'm trying to design a small home basement mine.
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